removed Network Operator Preference Test

/*

 * Copyright (C) 2019 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.settings.network.telephony;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.when;

import android.content.Context;

import android.content.res.Resources;

import org.junit.Before;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.RuntimeEnvironment;

@RunWith(RobolectricTestRunner.class)

public class NetworkOperatorPreferenceTest {

    private static final int LEVEL = 2;

    @Mock

    private Resources mResources;

    private Context mContext;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mContext = spy(RuntimeEnvironment.application);

        when(mContext.getResources()).thenReturn(mResources);

    }

    //TODO: add test cases.

}